Guides
Long-form pillar guides and focused how-to stubs that link into our free calculators. Start with a pillar for the full method, or jump into a specific question.
Pillar guides
- FinanceHow to Calculate a TipLearn how to calculate a tip (pre-tax vs post-tax), normal US tip percentages, and bill splits — with a free tip calculator and state pages.
- Home ImprovementHow to Estimate Materials for Any Home ProjectPlan roofing, lumber, fence, paint, concrete, tile, flooring, drywall, mulch, gravel, grass seed, and BTU needs with worked examples and free calculators.
How-to stubs
Short draft articles aimed at common search questions—each links to its calculator.
- How Much Paint for a 12×12 Room?Worked example: paint gallons for a 12×12 room with 8 ft ceilings, two coats, doors, and windows. Free paint calculator.
- How Many Bags of Concrete per Cubic Yard?Convert cubic yards of concrete to 40, 60, and 80 lb bags with a 10% waste buffer. Free concrete calculator.
- How to Measure a Room for FlooringMeasure length and width, add waste, and convert to flooring boxes. Free flooring calculator for laminate and vinyl.
- How Many Tiles per Square Foot?Convert tile size in inches to coverage per tile, then count tiles and boxes with waste. Free tile calculator.
- How Much Mulch for 200 Square Feet?Estimate cubic yards and bags of mulch for a 200 sq ft bed at common depths. Free mulch calculator.